broken-down
/ˈbrəʊkənˈdaʊn/adjective
1- worn out and dilapidated by age, use, or ill-treatment衰弱的; 破旧的; 毁坏的：
a broken-down council estate.
破旧的市建住房。
1.1
- (of a machine or vehicle) not functioning, due to mechanical failure（机器, 车辆）坏掉的; 出故障的。
1.2
- (of a horse) with serious damage to the legs, in particular the tendons, caused by excessive strain（马）腿受伤的（尤指腿拉伤）。